Trouble importing libjson-rpc-cpp with CMake

[freesurfer-rge]

I have been playing around a little with libjson-rpc-cpp, and I have a question about using the CMake config files which are provided.

Using the example on the homepage, I can manually compile and run it. I can also copy the FindMHD.cmake, FindJsonCpp.cmake files from the repo, hack together my own FindJsonRpcCpp.cmake based on them, and get a compile.

I then noticed the CMake config files installed in
/install/path/lib-json-rpc-cpp-1.3.0/lib64/libjson-rpc-cpp/cmake/
and I'm trying to figure out how to use them (since that seems preferable to hacking together my own).

With an appropriate CMAKE_PREFIX_PATH, I can have:

find_package(libjson-rpc-cpp CONFIG REQUIRED)

add_executable(SampleClient simpleclient.cpp)
target_link_libraries(SampleClient PUBLIC libjson-rpc-cpp::client)

and have CMake run quite happily. However, the compile fails, and on closer examination, none of the required -I options are being passed. I thought those were supposed to be added automatically by the target_link_libraries() command?

[cafornaca]

I'm wondering if I'm encountering a similar error:

$ make mkdir -p build
cd build && cmake -DCMAKE_BUILD_TYPE=Debug -DWITH_COVERAGE=Yes .. && make -j
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:13 (project):
  No CMAKE_CXX_COMPILER could be found.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.

-- Configuring incomplete, errors occurred!
See also "filepath/libjson-rpc-cpp/build/libjson-rpc-cpp/build/CMakeFiles/CMakeOutput.log".
See also "filepath/libjson-rpc-cpp/build/libjson-rpc-cpp/build/CMakeFiles/CMakeError.log".
make: *** [Makefile:9: build] Error 1